Cam actuated hinged weather strip for doors



L. VISCOLOSI 3,108,337

CAM ACTUATED HINGED WEATHER STRIP FOR DOORS Oct. 29, 1963 Filed April 15, 1962 1N VEN TOR.

L 0 (1/5 V/SCOL 03/ A TTORNE) United States Patent amass; CAM ACTUATED HZNGEH) WEATHER STP FOR DGUFS Louis Viscolosi, 73 Unit St, Providence, RI. Filed Apr. 13, 1962, Ser. No. 187,436 Claims. (Ci. 20-457) This invention relates to weather strips and more particularly to a cam actuated hinged weather strip, covering the meeting edges of a door, especially at the door bottom.

An object of the present invention is to provide a weather strip for a single door closure which moves out of interfering orientation when the door is opened but provides a positive weather seal when the door is closed.

Another object of the present invention is to provide a swingable Weather strip having a cam actuated pivoted member providing a positive action in pivoting the weather seal into closed position.

This application is a continuation in part of United States patent application serial 62,749 filed October 14, 1960, now Patent No. 3,091,007 patented May 28, 1963.

Other objects willbecome apparent from a persual of the following specification, claims and drawings in which:

FIGURE 1 is a perspective elevation of the improved weather strip on a door in a fully closed position.

FIGURE 2 is a perspective end view of the improved weather strip on a door in a partially open position.

FIGURE 3 is an end view of the improved weather strip on a door in closed position.

FIGURE 4 is a fragmentary plan view, partly in section of FIGURE 3.

FIGURE 5 is a front elevation of the improved weather strip on a closed door.

FIGURE 6 is a view similar to FIGURE 1 with the cam and hood removed.

Referring to the drawings in which like reference numerals designate like parts: a door assembly, fragmentarily illustrated, consists of a door frame and a door pivotally connected thereto. As illustrated, the door frame consists of a door jamb 7, a threshold or door tread 6, a door 5 and a hinge 4 pivotally connecting door 5 to door jamb 7.

Reference numeral 10, generally designates the new and improved cam actuated, hinged Weather strip for doors.

The Weather strip comprises two longitudinal, substantially flat sections 12 and 13 oriented side by side and hinged together. The hinge consists of rounded sections 8, 8A integrally formed in upper section 12 and similar rounded sections 9, 9A integrally formed in lower section 13 with a rod 11 pivotally connecting sections 8, 8A with sections 9, 9A. A coil spring 15 located on rod 11 has one end fastened to section 8 and the other end fastened to section 9A, whereby lower section 13 is yieldingly held in a position away from the door tread e. The lower section 13 may be provided with a dove tail roove 17 adapted to secure a weather sealing strip 16 therein. Weather sealing strip 16 may be fabricated in a dove tail shape to mate wtih dove tail 17. However, a weather sealing strip may not always be desirable. In that case lower section 13 will remain a plain flat longitudinal strip.

When used, weather sealing strip 16 may be of a rubber, rubber-like or plastic material, however, the preferred material is polyvinyl plastic. Weather strip la; is also provided with a trailing edge 16A which engages door tread 6 to provide a weather seal when door 5 is in closed position.

A small hood 14 may be provided to enclose the hinge construction 8, 9 etc., and coil spring 5. Hood 14 may 'ice be secured to door 5 by means of screws 3 which fasten upper section 12 to door 5.

A closure member 20 is pivotally mounted to a stud 21 fastened to door jamb 7. Closure member 20 is pro vided with a cam following face 19 and the center of its mass is below the pivot 21 to constantly urge contact point 23, under the influence of gravity, away from lower section 13. Lower section 13 is under the influence of coil spring 15 and is thereby biased upwardly, away from door tread 6. A cam 24 is fastened to door 5 by means of screws 25. Cam 24 slidingly engages cam following face 19.

The operation of the improved weather strip is as follows: Lower section 13 is normally biased by spring 15 to an open position. The hood 14 not only protects spring 15 but it also acts as a stop to prevent lower section 13 from pivoting into contact with upper section 12 (see FIGURE 2). Hood 14 also maintains lower section 13 in a proper position for engagement by closure member 20. The center of pivot 21 is to one side of the horizontal center of closure member 20 so that the mass of closure member 20 located. below pivot 21 pivots contact point 23 away from lower section 13. Conversely cam following face 19 swings toward door 5 and cam 24'. As door 5 is closed, lower section 13 engages contact point 23. Simultaneously, cam 24 engages cam following face 19, so that, cam 24 slidingly engaging cam following face 19 pivots closure member 20 around stud or pivot point 21 whereby, contact point 23 presses against lower section 13 to overcome the tension of spring 15. The continued movement of door 5 to a closed position causes cam 24 riding against cam following face 19 to pivot contact point 23 against lower section 13 which swings downwardly to a position where trailing edge 16A wipes door tread 6 and is pressed into firm contact with threshold or door tread 6' (see FIGURE 3). The result is a weather tight seal at the selected edge of the door 5.

If pivot point 21 is located on the horizontal center of closure member 20, then the weight of the mass, under the influence of gravity, will position closure member 20 in a vertical position. This position of closure member 20 may be desirable for small, light weight doors.

Having shown and described a preferred embodiment of the present invention, by way of example, it should be realized that structural changes could be made and other examples given without departing from either the spirit or scope of this invention.

What I claim is:

1. A weather strip for a door comprising a pair of substantially fiat strips pivotally joined side by side by a hinged connection, means fastening the first of said strips to said door, the second of said strips overlapping a crevice normally existing between said door and an adjoining door tread, resilient means normally urging said second strip pivotally away from said crevice, a closure member, stud means pivoting said closure member to a door jamb with the center of the mass of the closure member below said stud means for slidingly engaging said closure member with said second strip and a cam, means fastening said cam to said door, whereby movement of the door from open to closed position causes said cam to engage and pivot said closure member into engagement with said second strip to force said second strip against the tension of said resilient means into sealing engagement with the door tread.

2. A weather strip for a door comprising a pair of substantially flat strips pivotally joined side by side by a hinged connection, means fastening the first of said strips to said 1 our, the second of said strips overlapping a crevice normally existing between said door and an adjoining door tread, resilient means normally urging said second strip pivotally away from said crevice, a hood over said resilient means limiting the pivotal movement of said second strip, and a closure member, stud means pivoting said closure member to a door jamb with the center of the mass of said closure member below said stud means to urge said closure member, under the influence of gravity, into sliding engagement with said second strip, and a cam, means fastening said cam to said door, whereby movement of the door from open to closed position causes said earn to engage and pivot said closure member into engagement with said second strip to force said second strip against the tension of said resilient means and force of gravity of said closure member into sealing engagement with the door tread.

3. A weather strip, for a door comprising a door jamb, a door tread, a door, hinge means pivotally connecting said door to said door jamb, a crevice normally existing between said door and said door tread, said weather strip consisting of lower and upper longitudinal, substantially flat sections oriented side by side, a second hinge means pivotally connecting said lower section to said upper section, means fastening said upper section to said door, spring means normally urging said lower section pivotally away from said crevice, a weather sealing strip, means fastening said weather sealing strip to said lower section, a hood covering said spring means and, said second hinge means and limiting the pivotal movement of said lower section, away from said crevice, a closure member provided with a cam following face, a stud pivotally connecting said closure member to said door jamb with the center of the mass of said closure member below said stud means to urge said closure member, under the influence of gravity, into sliding engagement with said second strip, and a cam, means fastening said cam to said door, whereby, movement of said door from open to closed position engages said cam with said cam following face and simultaneously engages said lower section with said closure member, to pivot said closure member and overcome the force of said spring means to force said weather sealing strip intoweather sealing engagement with the door tread at said crevice.

4. A weather strip, for a door comprising a door frame and a door pivotally connected to said door frame, a crevice normally existing between said door and said door frame, said weather strip consisting of upper and lower longitudinal, substantially flat sections oriented side by side, hinge means pivotally connecting said upper section to said lower section, means fastening said upper section to the door, resilient means normally urging said lower section pivotally away from said crevice, a weather sealing strip, means fastening said weather sealing strip to said lower section, said weather sealing strip, having a trailing edge, a hood covering said resilient means and said hinge means and limiting the pivotal movement of said lower section away from crevice, a closure member provided with a cam following face and a contact point, a stud pivotally connecting said closure member to the door frame with the center of the mass of said closure member below the center of said stud, and a cam, means fastening said cam to the door, whereby, movement of the door from open to closed position engages said cam with said cam following face and simultaneously engages said lower section with said contact point to pivot said closure member and overcome the force of said resilient means to force said weather sealing strip into engagement with the door frame at the crevice.

5. A weather strip, for a door comprising a door jamb, a door tread, a door hinge means pivotally connecting said door to said door jamb, a crevice normally existing between said door and door tread, said weather strip consisting of lower and upper longitudinal, substantially flat sections oriented side by side, hinge means pivotally connecting said lower section to said upper section, means securing said upper section to said door, spring means pivotingly and yieldingly holding said lower section in a biased relation to said upper section, a dove tail formed in said lower section, a weather sealing strip secured in said dove tail, a hood covering said spring means and said hinge means and limiting the biased relation of said lower section away from the crevice, a closure member provided with a cam following face and a contact point, a stud, pivotally conecting said closure member to the door jamb, said stud being located horizontally off the center of said closure member with the center of the mass of said closure member below the center of said stud whereby under the influence of gravity said contact point pivots away from said lower section, and a cam, means fastening said cam to the door, whereby, movement of the door from open to closed position engages said cam with said cam following face and simultaneously engages said lower section with said contact point to pivot said closure member and over the force of said spring means to force said weather sealing strip into engagement with the door tread at the crevice.

References Cited in the file of this patent UNITED STATES PATENTS 

1. A WEATHER STRIP FOR A DOOR COMPRISING A PAIR OF SUBSTANTIALLY FLAT STRIPS PIVOTALLY JOINED SIDE BY SIDE BY A HINGED CONNECTION, MEANS FASTENING THE FIRST OF SAID STRIPS TO SAID DOOR, THE SECOND OF SAID STRIP OVERLAPPING A CREVICE NORMALLY EXISTING BETWEEN SAID DOOR AND AN ADJOINING DOOR TREAD, RESILIENT MEANS NORMALLY URGING SAID SECOND STRIP PIVOTALLY AWAY FROM SAID CREVICE, A CLOSURE MEMBER, STUD MEANS PIVOTING SAID CLOSURE MEMBER TO A DOOR JAMB WITH THE CENTER OF THE MASS OF THE CLOSURE MEMBER BELOW SAID STUD MEANS FOR SLIDINGLY ENGAGING SAID CLOSURE MEMBER WITH SAID SECOND STRIP AND A CAM, MEANS FASTENING SAID CAM TO SAID DOOR, WHEREBY MOVEMENT OF THE DOOR FROM OPEN TO CLOSED POSITION CAUSES SAID CAM TO ENGAGE AND PIVOT SAID CLOSURE MEMBER INTO ENGAGEMENT WITH SAID SECOND STRIP TO FORCE SAID SECOND STRIP AGAINST THE TENSION OF SAID RESILIENT MEANS INTO SEALING ENGAGEMENT WITH THE DOOR TREAD. 